Balloon catheters having a plurality of needles for the injection of one or more therapeutic agents
US8357118B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2009 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Aug 24, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2037/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
There are disclosed apparatus and methods for treating tissue by delivering at least one therapeutic agent into the tissue. In one embodiment, the apparatus comprises a catheter (30, 40) and a balloon member (150) disposed on a distal region of the catheter. A plurality of pockets (164) are disposed on the balloon member (150), and a plurality of needles (180) are associated with each of the plurality of pockets. The plurality of needles (180) are configured to engage tissue when the balloon (150) is in the inflated state, and further are configured to disperse a therapeutic agent from an associated pocket (164) into the tissue when the balloon (150) is in the inflated state. A first needle (180a) of the plurality of needles may comprise a length that is different than a second needle (180b), permitting the delivery of first and second therapeutic agents to different depths within the tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.